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Vertical Facial And Dental Arch Dimensional Changes In Extraction Vs. Non-Extraction Orthodontic Treatment, Meena Kumari, Mubassar Fida
Vertical Facial And Dental Arch Dimensional Changes In Extraction Vs. Non-Extraction Orthodontic Treatment, Meena Kumari, Mubassar Fida
Section of Dental-Oral Maxillofacial Surgery
OBJECTIVE: To compare the vertical facial and dental arch dimensional changes occurring with extraction and nonextraction orthodontic treatments.
STUDY DESIGN: Cross-sectional comparative study.
PLACE AND DURATION OF STUDY: The Aga Khan University Hospital, Karachi during the period 2003 to 2005.
METHODOLOGY: Data were collected using records of patients who visited the study setting during the study period. Pre- and post-treatment lateral cephalographs and study casts of 81 orthodontic patients (41=non-extraction and 40=premolar extractions) were taken. Variables used for evaluating vertical dimension were Frankfort mandibular plane angle (FMA), facial height (N-Me), facial height ratio (N-ANS/ANS-Me), soft tissue facial height (G' to …